Bones of Pelorosaurus have been found in England and Portugal. It was a Brachiosaur, with front legs that were longer than its hind legs.

The name has been challenged, and has been the subject of long-lasting dispute. Some palaeontologists prefer the name Cetiosaurus brevis.[1][2][3]

The taxonomic status of Pelorosaurus is as a result very problematic. Technically, Cetiosaurus brevis is its type species. The position of Pelorosaurus is further undermined by the fact that several researchers hold that the genus is a nomen dubium ('doubtful name').

Pelorosaurus was one of the first dinosaurs described, and the naming procedures were not so well-developed at the time. Its life-style is assumed to be similar to other brachiosaurs, eating from the higher branches of tall conifer trees.

↑Mantell G.A. 1850. On the Pelorosaurus: an undescribed gigantic terrestrial reptile, whose remains are associated with those of the Iguanodon and other saurians in the strata of Tilgate Forest, in Sussex. Philosophical Transactions of the Royal Society of London, 140: 379-390.